How can I write sqrt in this emulator?

Question

I'm trying to get the hipotenuse of a triangle in my program C++, but I can write sqrt for the equation and I don´t know how to write in another way.

Answer 1

sqrt() works just fine:

#include <math.h>
#include <stdio.h>

double FindHypotenuse(double a, double b)
{
    return sqrt(a * a + b * b);
}

int main()
{
    printf("The Hypotenuse for a triangle with sides 3, 4, ? is: %f\n", FindHypotenuse(3, 4));
    return 0;
}